Improved amphoteric starches and process for their preparation.
摘要
<p>Improved amphoteric starch derivatives containing tertiary amino or quaternary ammonium groups and anionic phosphate groups are disclosed. The derivatives which are defined by a minimum bound phosphorus content, a minimum viscosity and other criteria have use as wet-end additives and provide improved drainage properties in the manufacture of paper.</p>
申请公布号
EP0257338(A2)
申请公布日期
1988.03.02
申请号
EP19870111044
申请日期
1987.07.30
申请人
NATIONAL STARCH AND CHEMICAL CORPORATION
发明人
SOLAREK, DANIEL B.;DIRSCHERL, TERESA A.;HERNANDEZ, HENRY R.;JAROWENKO, WADYM